dcsimg

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Paranchistus serenei Bruce, 1983

Paranchistus serenei Bruce, 1983c:890, figs. 7H.I, 9 [type locality: Teluk Sawai, Ceram, Indonesia; in Ostrea cristagalli].

DIAGNOSIS.—Rostrum widening slightly toward apex, nearly horizontal or directed slightly ventrad; 2nd pereopod with movable finger slightly longer than fixed finger, hooked distally; 3rd pereopod with dactyl biunguiculate, flattened on extensor margin, latter and accessory tooth on flexor margin bearing minute spinules; maximum postorbital carapace length less than 4 mm.

RANGE.—Known only from the type locality on Ceram, Indonesia, living in Ostrea.

Paratypton Balss, 1914

Paratypton Balss, 1914a:83 [type species, by monotypy: Paratypton siebenrocki Balss, 1914b:84; gender: masculine].

DIAGNOSIS.—Rostrum lacking, represented by transverse straight or concave lamina crossing posterior portion of ophthalmic somite; carapace globular, without antennal, hepatic, suborbital, or supraorbital spines; abdomen with pleura of all somites rounded; telson not curving ventrad, margin ovoid, not incised posteriorly, without dorsolateral spines, posterior spines small to minute; antennal scale small, about twice as long as wide, broadly rounded distally without distolateral spine; maxilliped without exopod; 4th thoracic sternite without median process; 1st pereopod with carpus entire, not subdivided; 2nd pereopods similar, subequal, chela much longer than carpus, fingers not provided with socket and plunger closure, movable finger not semicircular; 3rd pereopod composed of 7 segments, merus and ischium not fused, dactyl without protuberance on flexor margin, merus unarmed on flexor margin; uropod without fixed tooth or movable spine on lateral margin of lateral branch.

RANGE.—Red Sea and eastern Africa to Indonesia and the Great Barrier Reef of Australia and the Marshall, Fiji, and Samoa islands; living in barely detectable cysts in Acropora corals.
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bibliographic citation
Chace, Fenner Albert, Jr. and Bruce, A. J. 1993. "The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907-1910, Part 6: Superfamily Palaemonoidea." Smithsonian Contributions to Zoology. 1-152. https://doi.org/10.5479/si.00810282.543